There's dozens of 3PLs out there. Without any information its impossible to recommend any. What are your requirements? Are you bringing your own shipping co

There's dozens of 3PLs out there. Without any information its impossible to recommend any. What are your requirements? Are you bringing your own shipping contracts? Some 3PLs won't let you bring your own. Is being cost efficient on returns a big deal? Do you need multiple warehouses for zone skipping or to optimize on delivery times? Do you care how you interface them(eg: flat file, API)? Are you bringing your own packaging? Do want to optimize on cost or prefer more features? Every 3PL is different and cater to different markets. For example newgistics specializes in returns and handles returns for a lot of the big companies even though they might not be doing the fulfillment. They also have APIs with their custom WMS(warehouse management system). Some companies have lots automation and technology(pick to light, , sorting machines) and some have none. Automation is very helpful if your sending the same stuff over and the shipments are very similar. Sorting will save you lots of money if you own your own shipping contracts and you can presort your daily orders if you have decent volume.